Mitsubishi Electric Mr.SLIM PKH-1.6FKA Technical & Service Manual page 38

<Auto vane drive> (PKH-1.6FKA-E / PKH-2FKA-E)
(a) The auto vane is driven by a 2.5 rpm motor.
1
10°
(b) Vane motor drive time
Airflow direction change
Downward C
Horizontal Downward A 1 2
Downward A Horizontal B 2 3
Horizontal B Downward C 3 4
(c) Airflow direction is based on the horizontal position detected by the vane motor limit switch. When the horizontal position
can not be determined, the vane motor will remain ON until it is determined.
1 If the horizontal position still can not be detected, despite the 10minute detection, the vane motor will turn OFF
Remote controller indication continues.
2 After, if the vane motor receives the "auto vane ON" command again, it will restart detecting the horizontal position.
If the horizontal position still can not be determined, despite the 10-minute detection, the vane motor will turn OFF.
<Auto vane drive> (PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E)
(a) The vane is driven by DC12V motor.
(b) Airflow direction is selected depends on the number of pulse were sent.
(c) Before start driving the auto vane, detect the standard position first, output the number of pulse to each Airflow.
(d) The speed of the auto vane drive for both open and close are set at 200 pulse/sec.
(e) Method of driving the auto vane.
1 Detecting the standard position:
Output 1600 pulse to the opening direction.
2 Position setting:Output the number of pulse indicated no below chart to the closing direction.
Close
Horizontal
Downward A
Downward B
Downward C
(4) Detecting abnormalities in the outdoor unit
After the compressor has been continuously operated for 3 minutes, if the difference between the indoor coil temperature
and room temperature is out of RANGE C for 1 minute, the indoor fan speed will turn to LOW. Five minutes later, if the dif-
ference is still out of
RANGE C,the outdoor unit is functioning abnormally. Thus, the compressor stops and check code "P8" appears on remote
controller.
RANGE A : Indoor coil temperature is more than 5 degrees above room temperature.
RANGE B : Indoor coil temperature is within 5 degrees either way of room temperature.
RANGE C : Indoor coil temperature is more than 5 degrees below room temperature.
Indoor coil temperature
minus room temperature
RANGE A
(degree)
+5
0 RANGE B
-5
RANGE C
2
30°
Horizontal 4 1
The number of pulse output after
detecting the standard position
1600
680
578
283
113
3 4
60° 70°
50Hz
Rise 2.1
0.65
6.7
0.65
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